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Spirometry and lung function

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https://www.readbyqxmd.com/read/28526439/-over-diagnosis-of-chronic-obstructive-pulmonary-disease-in-primary-care-prevalence-and-determining-factors
#1
R Golpe, M Díaz-Fernández, N Mengual-Macenlle, P Sanjuán-López, I Martín-Robles, E Cano-Jiménez
INTRODUCTION: COPD under-diagnosis is common in Primary Health Care medicine, due to the low use of spirometry, but there is less information about over-diagnosis of the disease in patients that have a clinical diagnosis of COPD. OBJECTIVE: The main objective of the study was to investigate the prevalence of COPD over-diagnosis in Primary Care medicine. Secondary objectives were to determine the factors associated with an incorrect clinical diagnosis of COPD and to analyse whether the pharmacological treatment is different for patients with correct or incorrect diagnosis...
May 17, 2017: Semergen
https://www.readbyqxmd.com/read/28526251/asthma-related-lung-function-sleep-quality-and-sleep-duration-in-urban-children
#2
Daphne Koinis-Mitchell, Sheryl J Kopel, Ronald Seifer, Monique LeBourgeois, Elizabeth L McQuaid, Cynthia A Esteban, Julie Boergers, Jack Nassau, Michael Farrow, Gregory K Fritz, Robert B Klein
OBJECTIVES: Examine (1) the extent to which changes in objectively measured asthma-related lung function (forced expiratory volume in 1 second) within a sleep period are associated with sleep quality and sleep duration during that sleep period in a group of urban children with persistent asthma, (2) associations between morning and evening asthma-related lung function and sleep quality and duration on the adjacent night, and (3) whether these associations differ by ethnic group. DESIGN: Cross-sectional, multimethod approach...
June 2017: Sleep Health
https://www.readbyqxmd.com/read/28515054/longitudinal-decline-in-lung-function-among-older-construction-workers
#3
John M Dement, Laura S Welch, Knut Ringen, Kim Cranford, Patricia Quinn
BACKGROUND: Occupational exposures to vapours, gasses, dusts and fumes (VGDF) and chest X-ray abnormalities by the International Labour Office (ILO) classification system are associated with reduced lung function, with the majority of published studies being cross-sectional. We examined the effects of VGDF exposures, as well as ILO parenchymal changes, pleural plaque and diffuse pleural thickening (DPT) on reduction in lung function in a longitudinal study. METHODS: Chest radiographs and spirometry for 3150 ageing construction workers enrolled in a medical screening programme with a baseline and at least one follow-up examination were studied...
May 17, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28514950/lung-function-imaging-methods-in-cystic-fibrosis-pulmonary-disease
#4
REVIEW
Magdalena Kołodziej, Michael J de Veer, Marian Cholewa, Gary F Egan, Bruce R Thompson
Monitoring of pulmonary physiology is fundamental to the clinical management of patients with Cystic Fibrosis. The current standard clinical practise uses spirometry to assess lung function which delivers a clinically relevant functional readout of total lung function, however does not supply any visible or localised information. High Resolution Computed Tomography (HRCT) is a well-established current 'gold standard' method for monitoring lung anatomical changes in Cystic Fibrosis patients. HRCT provides excellent morphological information, however, the X-ray radiation dose can become significant if multiple scans are required to monitor chronic diseases such as cystic fibrosis...
May 17, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28506611/clinical-and-genetic-associations-of-objectively-identified-interstitial-changes-in-smokers
#5
Samuel Y Ash, Rola Harmouche, Rachel K Putman, James C Ross, Alejandro A Diaz, Gary M Hunninghake, Jorge Onieva Onieva, Fernando J Martinez, Augustine M Choi, David A Lynch, Hiroto Hatabu, Ivan O Rosas, Raul San Jose Estepar, George R Washko
BACKGROUND: Smoking related lung injury may manifest on computed tomography (CT) as both emphysema and interstitial changes. We have developed an automated method to quantify interstitial changes and hypothesized that this measurement would be associated with lung function, quality of life, mortality, and a MUC5B polymorphism. METHODS: Using CT scans from the COPDGene study, lung parenchyma was objectively labeled as a tissue subtype and the percentage of the lung occupied by interstitial subtypes was calculated...
May 12, 2017: Chest
https://www.readbyqxmd.com/read/28502420/cardiopulmonary-exercise-testing-and-second-line-pulmonary-function-tests-to-detect-obstructive-pattern-in-symptomatic-smokers-with-borderline-spirometry
#6
Fabiano Di Marco, Silvia Terraneo, Sara Job, Rocco Francesco Rinaldo, Giuseppe Francesco Sferrazza Papa, Maria Adelaide Roggi, Pierachille Santus, Stefano Centanni
BACKGROUND: The need for additional research on symptomatic smokers with normal spirometry has been recently emphasized. Albeit not meeting criteria for Chronic obstructive pulmonary disease (COPD) diagnosis, symptomatic smokers may experience activity limitation, evidence of airway disease, and exacerbations. We, therefore, evaluated whether symptomatic smokers with borderline spirometry (post-bronchodilator FEV1/FVC ratio between 5th to 20th percentile of predicted values) have pulmonary function abnormalities at rest and ventilatory constraints during exercise...
June 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28494995/high-accuracy-detection-of-airway-obstruction-in-asthma-using-machine-learning-algorithms-and-forced-oscillation-measurements
#7
Jorge L M Amaral, Agnaldo J Lopes, Juliana Veiga, Alvaro C D Faria, Pedro L Melo
BACKGROUND AND OBJECTIVES: The main pathologic feature of asthma is episodic airway obstruction. This is usually detected by spirometry and body plethysmography. These tests, however, require a high degree of collaboration and maximal effort on the part of the patient. There is agreement in the literature that there is a demand of research into new technologies to improve non-invasive testing of lung function. The purpose of this study was to develop automatic classifiers to simplify the clinical use and to increase the accuracy of the forced oscillation technique (FOT) in the diagnosis of airway obstruction in patients with asthma...
June 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28488348/pulmonary-artery-stiffness-in-chronic-obstructive-pulmonary-disease-copd-and-emphysema-the-multi-ethnic-study-of-atherosclerosis-mesa-copd-study
#8
Chia-Ying Liu, Megha Parikh, David A Bluemke, Pallavi Balte, James Carr, Stephen Dashnaw, Hooman D Poor, Antoinette S Gomes, Eric A Hoffman, Steven M Kawut, Joao A C Lima, David A McAllister, Martin A Prince, Jens Vogel-Claussen, R Graham Barr
PURPOSE: Chronic obstructive pulmonary disease (COPD) and particularly emphysema are characterized by stiffness of the aorta, due in part to accelerated elastin degradation in the lungs and aorta. Stiffness of the pulmonary arteries (PAs) may also be increased in COPD and emphysema, but data are lacking. We assessed PA stiffness using MRI in patients with COPD and related these measurements to COPD severity and percent emphysema. MATERIALS AND METHODS: The Multi-Ethnic Study of Atherosclerosis (MESA) COPD Study recruited 290 participants, age 50-79 years with 10 or more packyears and free of clinical cardiovascular disease...
May 10, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28486753/small-airway-function-before-and-after-cold-dry-air-challenge-in-pediatric-asthma-patients-during-remission
#9
Michael Steinbacher, Andreas Pfleger, Gerold Schwantzer, Stefanie Jauk, Elisabeth Weinhandl, Ernst Eber
BACKGROUND: We wanted to compare cold dry air challenge (CACh) induced changes in spirometric parameters with changes in nitrogen multiple breath washout (N2 MBW) parameters in pediatric asthma patients during clinical remission over the past year (ie, with "inactive asthma"). As N2 MBW assesses ventilation heterogeneity we expected to gain detailed information about peripheral airways contribution. METHODS: In subjects with normal spirometry N2 MBW, spirometry and body plethysmography were performed at baseline, after CACh, and after salbutamol inhalation...
May 9, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28482420/-preliminary-analysis-of-lung-function-of-population-with-biofuel-smoke-exposure
#10
D X Zhao, S Y Chen, Y M Zhou, X C Li, S Liu, L Chen, J D Pu, P X Ran
Objective: To analyse the impaired lung functions of people with biofuel smoke exposure. Methods: Nonsmokers with biofuel smoke exposure were selected as research objects in a mountainous area of northern Guangdong where the families used biofuels as main energies and the nonsmokers without biofuel smoke exposure in the same area as control. Questionnaire interviews and spirometry tests were performed on all subjects. To analyse the differences of lung functions in both. Results: Seventy hundred and seventeen subjects were enro1led in this study...
May 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28465382/pulmonary-function-and-respiratory-health-of-military-personnel-before-southwest-asia-deployment
#11
Andrew J Skabelund, Frederic A Rawlins, Edward T McCann, Joshua A Lospinoso, Lorraine Burroughs, Roger A Gallup, Michael J Morris
BACKGROUND: Significant concern exists regarding the respiratory health of military personnel deployed to Southwest Asia, given their exposures to numerous environmental hazards. Although the deployed military force is generally assumed to be fit, the pre-deployment respiratory health of these individuals is largely unknown. METHODS: Soldiers deploying to Southwest Asia were recruited from the pre-deployment processing center at Fort Hood, Texas. Participants completed a general and respiratory health questionnaire and performed baseline spirometry...
May 2, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28464509/forced-vital-capacity-predicts-morbidity-and-mortality-in-adults-with-repaired-tetralogy-of-fallot
#12
Katie E Cohen, Matthew W Buelow, Jennifer Dixon, Ruta Brazauskas, Scott B Cohen, Michael G Earing, Salil Ginde
OBJECTIVE: Abnormal lung function characterized by a reduced forced vital capacity (FVC) is common in adults with repaired tetralogy of Fallot (TOF) and is associated with previous thoracotomies and sternotomies. The impact of abnormal lung function on clinical outcomes in adult patients with repaired TOF is unclear. The aim of this study was to determine the impact of abnormal lung function on the outcome of hospitalization and death in adults with repaired TOF when analyzed with other traditional cardiac risk factors...
May 2, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28461298/differences-between-asthma-copd-overlap-syndrome-and-adult-onset-asthma
#13
Minna Tommola, Pinja Ilmarinen, Leena E Tuomisto, Lauri Lehtimäki, Jussi Haanpää, Onni Niemelä, Hannu Kankaanranta
Differences between asthma-COPD overlap syndrome (ACOS) and adult-onset asthma are poorly understood. This study aimed to evaluate these differences in a clinical cohort of patients with adult-onset asthma, as a part of the Seinäjoki Adult Asthma Study (SAAS).188 patients were diagnosed with adult-onset asthma and re-evaluated 12 years after diagnosis. They were divided into three groups based on smoking history and post bronchodilator spirometry values: 1) never- and ex-smokers with <10 smoked pack-years; 2) non-obstructive (forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) ≥0...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28459622/respiratory-symptoms-items-from-the-copd-assessment-test-identify-ever-smokers-with-preserved-lung-function-at-higher-risk-for-poor-respiratory-outcomes-an-analysis-of-the-subpopulations-and-intermediate-outcome-measures-in-copd-study-cohort
#14
Carlos H Martinez, Susan Murray, R Graham Barr, Eugene Bleecker, Russell P Bowler, Stephanie A Christenson, Alejandro P Comellas, Christopher B Cooper, David Couper, Gerard J Criner, Jeffrey L Curtis, Mark T Dransfield, Nadia N Hansel, Eric A Hoffman, Richard E Kanner, Eric Kleerup, Jerry A Krishnan, Stephen C Lazarus, Nancy K Leidy, Wanda O'Neal, Fernando J Martinez, Robert Paine, Stephen I Rennard, Donald P Tashkin, Prescott G Woodruff, MeiLan K Han
RATIONALE: Ever-smokers without airflow obstruction scores greater than or equal to 10 on the COPD Assessment Test (CAT) still have frequent acute respiratory disease events (exacerbation-like), impaired exercise capacity, and imaging abnormalities. Identification of these subjects could provide new opportunities for targeted interventions. OBJECTIVES: We hypothesized that the four respiratory-related items of the CAT might be useful for identifying such individuals, with discriminative ability similar to CAT, which is an eight-item questionnaire used to assess chronic obstructive pulmonary disease impact, including nonrespiratory questions, with scores ranging from 0 to 40...
May 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28458532/relationship-between-lung-function-and-grip-strength-in-older-hospitalized-patients-a-pilot-study
#15
Sarah J Holmes, Stephen C Allen, Helen C Roberts
OBJECTIVE: Older people with reduced respiratory muscle strength may be misclassified as having COPD on the basis of spirometric results. We aimed to evaluate the relationship between lung function and grip strength in older hospitalized patients without known airways disease. METHODS: Patients in acute medical wards were recruited who were aged ≥70 years; no history, symptoms, or signs of respiratory disease; Mini Mental State Examination ≥24; willing and able to consent to participate; and able to perform hand grip and forced spirometry...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28457954/standardized-treatment-of-pulmonary-exacerbations-stop-study-physician-treatment-practices-and-outcomes-for-individuals-with-cystic-fibrosis-with-pulmonary-exacerbations
#16
Natalie E West, Valeria V Beckett, Raksha Jain, Don B Sanders, Jerry A Nick, Sonya L Heltshe, Elliott C Dasenbrook, Donald R VanDevanter, George M Solomon, Christopher H Goss, Patrick A Flume
BACKGROUND: Pulmonary exacerbations (PEx) are associated with increased morbidity and mortality in individuals with CF. PEx management practices vary widely, and optimization through interventional trials could potentially improve outcomes. The object of this analysis was to evaluate current physician treatment practices and patient outcomes for PEx. METHODS: The Standardized Treatment of Pulmonary exacerbations (STOP) observational study enrolled 220 participants ≥12years old admitted to the hospital for PEx at 11 U...
April 27, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28448861/congenital-unilateral-diaphragmatic-eventration-in-an-adult-a-rare-case-presentation
#17
Johann Paulo S Guzman, Nilo C Delos Santos, Edgar A Baltazar, Allan Troy D Baquir
We present a rare case of 32year old female with congenital diaphragmatic eventeration female presenting in an adult. She had symptoms of intermittent dyspnea and occasional epigastric discomfort. Patient had no previous history of trauma. Physical examination showed bowel sound involving the left hemithorax. Imaging modalities confirmed the diagnosis of a congenital left diaphragmatic eventeration. Patient underwent plication of the diaphragm using the abdominal approach. Intra-operatively, the left diaphragm was attenuated...
April 18, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28446555/higher-serum-25-oh-d-concentrations-are-associated-with-improved-fev1-and-fvc-in-adolescence
#18
Claudia Flexeder, Elisabeth Thiering, Sibylle Koletzko, Dietrich Berdel, Irina Lehmann, Andrea von Berg, Barbara Hoffmann, Carl-Peter Bauer, Joachim Heinrich, Holger Schulz
Vitamin D plays a role in the development of the immune system and the lung, as well as in airway remodelling. Therefore, this study investigated the association between serum 25-hydroxyvitamin D (25(OH)D) concentrations and spirometric lung function parameters at age 15 years.In the German birth cohorts GINIplus and LISAplus, lung function testing by spirometry and 25(OH)D measurements were performed during the 15-year follow-up examinations. Valid lung function measurements pre- and/or post-bronchodilation and serum 25(OH)D concentrations, which were adjusted for the date of blood sampling to account for seasonal variability, were available for 2607 adolescents...
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28442632/effect-of-aerobic-exercise-training-on-ventilatory-efficiency-and-respiratory-drive-in-obese-subjects
#19
Mehdi Chlif, Anis Chaouachi, Said Ahmaidi
BACKGROUND: Obese patients show a decline in exercise capacity and diverse degrees of dyspnea in association with mechanical abnormalities, increased ventilatory requirements secondary to the increased metabolic load, and a greater work of breathing. Consequently, obese patients may be particularly predisposed to the development of respiratory muscle fatigue during exercise. The aim of this study was to assess inspiratory muscle performance during incremental exercise in 19 obese male subjects (body mass index 41 ± 6 kg/m(2)) after aerobic exercise training using the noninvasive, inspiratory muscle tension-time index (TT0...
April 25, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28442234/impact-of-restrictive-lung-disorder-on-cardiovascular-mortality-in-a-general-population-the-yamagata-takahata-study
#20
Yuki Honda, Tetsu Watanabe, Yoko Shibata, Yoichiro Otaki, Shinpei Kadowaki, Taro Narumi, Tetsuya Takahashi, Daisuke Kinoshita, Miyuki Yokoyama, Satoshi Nishiyama, Hiroki Takahashi, Takanori Arimoto, Tetsuro Shishido, Sumito Inoue, Takuya Miyamoto, Tsuneo Konta, Ryo Kawasaki, Makoto Daimon, Takeo Kato, Yoshiyuki Ueno, Takamasa Kayama, Isao Kubota
BACKGROUND: Obstructive lung disorder (OLD) is known to be associated with cardiovascular disease. However, the impact of restrictive lung disorder (RLD) on cardiovascular mortality has not been fully investigated in the apparently healthy general population. OBJECTIVES: To clarify whether RLD is associated with cardiovascular mortality in the general population. METHODS AND RESULTS: This community-based cohort study included 3247 subjects who participated in an annual health check in Takahata...
April 20, 2017: International Journal of Cardiology
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